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If the air vent mode doors are vacuum operated, (though some are cable operated), they could have disconnected a vacuum line from engine. A vacuum diagram sticker should be located under the hood. The a/c hose will be listed as (HVAC hose).

I assume your heater setting is electric control, if so either your defrost and floor heat switch failed or wire problem.
For the air not hot, check the heat control valve on the top of the hose it should be in front of the firewall. I don't know your car is using mechanic valve or electric control valve. Anyway check there first.
Good luck.

Most cars and trucks are set for the A/C to run in defrost. Even if you have the temp at hot. The air will pass through the evaporator core first witch draws moisture out of theair. That is why you see water dripping out of a car with the air on and sitting at one place.